Final answer:
The Centers for Medicare and Medicaid Services (CMS) and the Food and Drug Administration (FDA) administer CLIA.
Step-by-step explanation:
The two government agencies that administer the Clinical Laboratory Improvement Amendments (CLIA) are the Centers for Medicare and Medicaid Services (CMS) and the Food and Drug Administration (FDA).
These agencies are responsible for implementing and enforcing regulations to ensure the quality and accuracy of laboratory testing in the United States. The CMS oversees the certification and inspection of clinical laboratories, while the FDA regulates the quality and accuracy of tests and laboratory developed tests.